2009 Audi Q7 vs. 2005 Mercedes-Benz S
To start off, 2009 Audi Q7 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Mercedes-Benz S. In addition, the cost of maintenance, including insurance, on 2005 Mercedes-Benz S would be higher. At 3,997 cc (8 cylinders), 2005 Mercedes-Benz S is equipped with a bigger engine. In terms of performance, 2009 Audi Q7 (280 HP @ 6200 RPM) has 32 more horse power than 2005 Mercedes-Benz S. (248 HP @ 4000 RPM). In normal driving conditions, 2009 Audi Q7 should accelerate faster than 2005 Mercedes-Benz S. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz S weights approximately 1110 kg more than 2009 Audi Q7.
Because 2009 Audi Q7 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Mercedes-Benz S. In wet, icy, snow, or gravel driving conditions, 2009 Audi Q7 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2005 Mercedes-Benz S (560 Nm @ 1700 RPM) has 199 more torque (in Nm) than 2009 Audi Q7. (361 Nm @ 2750 RPM). This means 2005 Mercedes-Benz S will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi Q7.
Compare all specifications:
| 2009 Audi Q7 | 2005 Mercedes-Benz S | |
| Make | Audi | Mercedes-Benz |
| Model | Q7 | S |
| Year Released | 2009 | 2005 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3597 cc | 3997 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 280 HP | 248 HP |
| Engine RPM | 6200 RPM | 4000 RPM |
| Torque | 361 Nm | 560 Nm |
| Torque RPM | 2750 RPM | 1700 RPM |
| Engine Compression Ratio | 11.0:1 | 19.0:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 930 kg | 2040 kg |
| Vehicle Length | 5090 mm | 5160 mm |
| Vehicle Width | 1990 mm | 1860 mm |
| Vehicle Height | 1740 mm | 1450 mm |
| Wheelbase Size | 3010 mm | 2970 mm |
| Fuel Consumption Overall | 6.8 L/100km | 9.6 L/100km |
| Fuel Tank Capacity | 100 L | 88 L |
